A former executive of a troubled former Miami pharmaceutical-testing company filed a lawsuit claiming his ex-employer owes him $500,000, even though he resigned amid accusations that he committed financial and ethical improprieties.

Gerald Seifer, a non-lawyer who served as vice president of legal affairs for publicly traded SFBC International, sued in Miami-Dade Circuit Court for breach of oral contract and promissory estoppel. Seifer claims that he was verbally promised the money by the company’s then-chief executive, Arnold Hantman, to get him to resign, but the company later reneged.